Keep the refrigerator at 40°F or below and the freezer at 0°F or below, and use appliance thermometers to confirm the real temperatures. The dial setting isn't the same as the food storage temperature.
Quick checklist
- Put an appliance thermometer in the fridge.
- Put another one in the freezer.
- Check readings often.
- Adjust controls if the fridge is above 40°F.
- Avoid overpacking so cold air can circulate.
- Check after power outages, service, or moving the appliance.
Why the dial isn't enough
The FDA says few refrigerator controls show actual temperatures, so an inexpensive freestanding appliance thermometer helps you monitor and adjust the refrigerator or freezer if needed.
Where to put the thermometer
Place it where it's easy to read but not blocking vents. If the fridge has warm spots, check more than one location. Door shelves are often warmer than interior shelves.
When to pay closer attention
- The door was left open.
- The power went out.
- The fridge feels packed tight.
- Food spoils faster than expected.
- You adjusted the controls and need to verify the result.
Good maintenance rhythm
- Check temperatures weekly until you trust the appliance, then at least monthly and after outages.
- Wipe spills quickly and avoid blocking airflow.